Electrical issue after installing speakers with amp and interior LED lights

Tiny
RICHBOI85
  • MEMBER
  • 2000 BUICK LESABRE
  • 153,900 MILES
Within the last week I have installed speakers with amp and interior LED lights. Last night the lights near my speedometer went out and this morning it would not crank. Nothing came in but the phone charger light. I do have a second battery in my trunk for all accessories. I also have a car alarm, push button start system and rear camera installed and all are on the same wiring
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Tuesday, June 30th, 2020 AT 3:38 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

What is the battery voltage with the key off?

https://www.2carpros.com/articles/car-battery-load-test

What is the battery voltage when the engine is running?

https://www.2carpros.com/articles/how-to-check-a-car-alternator

How much current is the amp rated at?

https://www.2carpros.com/articles/how-to-check-wiring

I attached a diagram for you to view. We need to do some testing to see if the alternator is any good.

Roy
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Wednesday, July 1st, 2020 AT 4:27 AM

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